Improvement in machines for heading spikes and nails



T. weven.

Machines forHead-ing Spikes a-nfd Nails.

Patented Nov. i7 1874*.

. Y- b l dgp@ @tiene THE GRAPHIC C0V FHOT'LITH379314I PARKPLACEIHLY.

UNITED STATES PATENT OFFICE.

THOMAS WOOD, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN MACHINES FOR HEADING SPIKES AND NAILS.

Specification forming part of Letters Patent No. 156,865, dated November17, 1874; application filed June 11, 1874.

To all whom t may concern:

Be it known that I, THOMAS Woon, of Chicago, in the county of Cook andState of Illinois, have invented'a new and useful Improvement in Spikeand Nail Machines, of which the following is a specification:

The present invention relates to an improvement in that class ofmachines which are designed more especially to form the heads ofhorseshoe-nails after they have been forged by machinery. lts natureconsists in afeed-wheel, in the periphery of which the nails are placedby hand, and carried to heading devices.

The nails, one at a time, are brought between dies, when the wheel stopslong enough for a die to form the head of the nail, after which thefinished nail is carried beneath the wheel, and removed by means of atool attached to an oscillating lever beneath the machine. The dies aredriven by a crank, shafts, pitman, reciprocating cross-tree, andconnecting-rods, as hereinafter described and shown.

In the drawing, Figure l is a side elevation of my inprovement in spikeand nail machines; Fig. 2, a top or plan view thereof; Fig. 3, a brokenside view of the feed-wheel, showing also the tool for removing thenails from the wheel, and the lever to which it is attached.V Fig. 4 isa broken detached top view of the levers which carry the dies, and alsoofthe sliding head which operates it.

A represents the foundation or frame, which supports the mechanismhereinafter described. O11 the top of this foundation is a bed-plate,A', extending far enough over the foundation A to form two bearings, P,which support the shaft P' of a lever, J'. A feed-wheel, F, is providedwith a series of holes, Fig. 2, in which nails to he headed are to beput. On the side of this wheel is formed a continuous ratchet, IVI,whose teeth correspond in number with the number of holes in theperiphery, so that a dog, J, attached to a lever, J', will move theWheel F one notch at a time, and bring nails in rotation between dies b,Fig. 2. The lever J' is pivoted to the shaft of the Wheel F, and isoperated by an adjustable two-part connectingrod, H, which is driven bya crank on shaft B'. The adjustment for the movement of the wheel ismade by slots in one of the rods H, and setscrews put therein, as shownat H', the object being to provide such an adjustment as will alwaysattain a proper movement of the dog J. To hold the wheel F in place, andprovide a means for its rotation, rollers I are pivoted to a frame, a,Fig. l, placed close to said Wheel, so that the internal part of therimv may readily turn on the rollers. The means for clamping the shanksof nails, and holding them in position to be headed, consist of twodies, b, Fig. 2, affixed to levers K, which are pivoted to the plate A'at d d, and are opened at the time of a forward movement of thefeed-Wheel F, and closed at the time the wheel is at rest, by means of asliding head, 2, which is provided with pins 3, Figs. 2 and 4, so thatin their reciprocating movement they will bear against cams 4 on theoutsides of the levers, and carry the latter toward each other,coil-springs e' carrying the levers back. j

The means for operating the head 2 consist of a strong connecting-bar,5, bolted to the head 2, and pivoted to a pitman, c, which is driven bya crank-shaft, D'. This shaft does not rotate, but is turned aboutone-fourth round by means of a connecting-rod, D, pivotedto the shaft,and to a connecting-rod, E, the latter being pivoted to a wrist-pin ondrivewheel G, fixed to the crank-shaft B'. The connecting-bar 5 not onlydrives the head 2, but it drives a header, a, Fig. 2, by means of anintermediate plunger, N, which is secured to the head 2 and bar 5 by apin, 9. 'Ihe header a runs in guides 8; and on the shank of the headeris placed a coil-spring, d", which throws the die a back after it hasbeen pushed forward to head a nail.

To make all of the gearing appertaining to the dies very strong, bars C,terminating at the boxes l1 of the shaft 6, are fastened, at theiropposite ends, to a cross-tree, l2, fastened to the same pivots, d, towhich the levers K are pivoted.

To remove the nails from the wheel F after they are headed, a lever, L,is pivoted to the rear end of the machine, at 13, (dotted lines,) and isconnected to the lever J' by a rod, c, so that when the lever is movedthe lever L is carried with it. A blade, m, is fastened to the lever L,and at the proper time it is moved automatically under nail-heads, andremoves the nails from the wheel F.

The operation of the machine is as follows:

The nails are to be put by hand into the holes of the Wheel F, and thecrank-shaft B rotated at such speed as the feeding of the Wheel F WillWarrant. This will carry the head of the nails, one at a time, into thespace between the dies b and a, Fig. 2, and when there the Wheel F willstop, While the dies grasp the shank of a nail close to the head, Whilethe die a comes against the latter, and finishes or heads it. The nailsare removed by the blade fm, as aforesaid.

I claim and desire to secure by Letters Patentl. The Wheel F, providedwith holes to receive the nails, in combination Withthe rollers I, onwhich it is mounted, as set forth.

2. The combination of Wheel F, rollers I,

dies a b, levers K, cross-head 2, bar 5, pin 9, pitman C, springs e',lever J', dog J, and crank-shaft D', as and for the purpose specilied.

3. The combination of the Wherl F, levers L J', rod e, and blade m, forremoving nails from the Wheel, as described and shown.

4. The combination of Wheel F, lever J', adjustable connecting-rods HH', crank-shaft B', dog J, rod e, lever L, and blade m, as and for thepurpose set forth.

5. The combination of shaft B', connectingrods D E, shaft D', pitnnan c,bar 5, pin 9,and dies a b, substantially as specified.

, THOMAS WOOD.

Witnesses:

JOHN H. ELLIOTT, G. L. CHAPIN.

